| Presentation | 2021-02-19 Application of distributed vibration sensing based on frequency-division-multiplex phase OTDR to monitoring an installed aerial optical fiber cable state Yoshifumi Wakisaka, Daisuke Iida, Tatsuya Okamoto, Yusuke Koshikiya, Nazuki Honda, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Researches on distributed vibration sensing (DVS) to closely visualize optical fiber cable states have been developed for various applications including traffic monitoring, structural health monitoring, detection of natural disasters such as earthquakes and gales. Among DVS techniques, Phase-OTDR can detect vibrations quantitatively and highly sensitively. Problems such as phase unwrapping failures and fading have been alleviated by some techniques. These include the frequency-division-multiplexing (FDM) technique developed by our group. Field trials outside laboratories have also been increased for practical uses. However, the number of trials using a communication optical fiber cable as a sensor to monitor communication facilities are still very small. This paper describes the recent progresses in FDM techniques first. Then, this paper shows the monitoring results of an aerially installed cable on telephone poles outside a building, which experienced natural winds. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | distributed vibration sensing / phase-OTDR / frequency-division-multiplex / aerially installed cable / maintenance |
| Paper # | OFT2020-69,OPE2020-90 |
| Date of Issue | 2021-02-11 (OFT, OPE) |
| Conference Information | |
| Committee | OPE / OCS / OFT |
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| Conference Date | 2021/2/18(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Goji Nakagawa(Fujitsu) / Joji Maeda(Tokyo Univ. of Science) / Yuji Matsuura(Tohoku Univ.) |
| Vice Chair | Takaaki Ishigure(Keio Univ.) |
| Secretary | Takaaki Ishigure(Gunma Univ.) / (DIC) / (NTT) |
| Assistant | Junichi Fujikata(PETRA) / Toshio Watanabe(Kagoshima Univ.) / / Hajime Arao(Sumitomo Electric) / Yukihiro Goto(NTT) |
| Paper Information | |
| Registration To | Technical Committee on OptoElectronics / Technical Committee on Optical Communication Systems / Technical Committee on Optical Fiber Technology |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Application of distributed vibration sensing based on frequency-division-multiplex phase OTDR to monitoring an installed aerial optical fiber cable state |
| Sub Title (in English) | |
| Keyword(1) | distributed vibration sensing |
| Keyword(2) | phase-OTDR |
| Keyword(3) | frequency-division-multiplex |
| Keyword(4) | aerially installed cable |
| Keyword(5) | maintenance |
| 1st Author's Name | Yoshifumi Wakisaka |
| 1st Author's Affiliation | NTT Corporation(NTT) |
| 2nd Author's Name | Daisuke Iida |
| 2nd Author's Affiliation | NTT Corporation(NTT) |
| 3rd Author's Name | Tatsuya Okamoto |
| 3rd Author's Affiliation | NTT Corporation(NTT) |
| 4th Author's Name | Yusuke Koshikiya |
| 4th Author's Affiliation | NTT Corporation(NTT) |
| 5th Author's Name | Nazuki Honda |
| 5th Author's Affiliation | NTT Corporation(NTT) |
| Date | 2021-02-19 |
| Paper # | OFT2020-69,OPE2020-90 |
| Volume (vol) | vol.120 |
| Number (no) | OFT-369,OPE-370 |
| Page | pp.pp.62-65(OFT), pp.67-70(OPE), |
| #Pages | 4 |
| Date of Issue | 2021-02-11 (OFT, OPE) |